Tapered Spacer Kit Features This set of spacers allows the MagnetoSpeed to be better aligned with barrels with an extreme taper. Kit comes with a .5 spacer and a 1 spacer that can also be combined to form a 1.5 stack. Tapered Spacer Kit Specifications allows the MagnetoSpeed to be better aligned with barrels with an extreme taper Kit comes with a .5 spacer and a 1 spacer that can also be combined to form a 1.5 stack